EP0331842A1 - Verfahren und Einrichtung zum Rückgewinnen von Öl - Google Patents

Verfahren und Einrichtung zum Rückgewinnen von Öl Download PDF

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Publication number
EP0331842A1
EP0331842A1 EP88311053A EP88311053A EP0331842A1 EP 0331842 A1 EP0331842 A1 EP 0331842A1 EP 88311053 A EP88311053 A EP 88311053A EP 88311053 A EP88311053 A EP 88311053A EP 0331842 A1 EP0331842 A1 EP 0331842A1
Authority
EP
European Patent Office
Prior art keywords
cuttings
oil
hydrocarbons
chamber
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP88311053A
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English (en)
French (fr)
Inventor
Thomas Desormeaux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0331842A1 publication Critical patent/EP0331842A1/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/005—Waste disposal systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2203/00—Furnace arrangements
    • F23G2203/80—Furnaces with other means for moving the waste through the combustion zone
    • F23G2203/801—Furnaces with other means for moving the waste through the combustion zone using conveyors
    • F23G2203/8013—Screw conveyors

Definitions

  • the present invention relates to a process and apparatus for the recovery of oil and more particularly to the recovery of oil from oil well cuttings.
  • drilling fluids are utilized for several purposes, one of which is to be pumped downhole for flushing away cuttings as the drill bit cuts through the strata of the earth.
  • the cuttings are removed upwardly along the annular space between the drill string and the borehole, so as to be brought above ground.
  • the drilling fluid and cuttings brought up from the borehole are processed through a series of shale shakers and the like wherein the drilling fluid and cuttings are shifted so that the drilling fluid is allowed to flow back for reuse in the borehole, and the cuttings then are removed, often to a waste pit or the like.
  • U.S. regulations which will require that the offshore waste pits be disallowed. Therefore there is an ever impending need for a means for disposal of cuttings which are usually highly contaminated with hydrocarbons or other fluids.
  • Patent Application Serial Number 946,953 which is presently pending, also relates to an improvement of the process in U.S. Patent No. 4,606,283, U.S. Patent No. 4,606,283, also relates to improvements in the incineration process as disclosed in U.S. Patent Serial No. 840,067, and further relates to the recover of oil following the incineration process.
  • an oil recovery system comprising:
  • a method for hindering ignition of hydrocarbons that are removed from oil well cuttings through heating comprising:
  • One embodiment of the present invention is a system primarily for the extraction and recovery of oil from borehole cuttings that have been recovered from a downhole.
  • contaminated cuttings are fed into a multi-tiered incineration chamber system wherein the cuttings are incinerated, oil is evaporated from the cuttings, and extracted through exhaust systems, and the oil is then recovered through condensation of the oil and separation from any water.
  • the system further includes the introduction of an inert fluid, such as nitrogen gas, into each incineration chamber during the incineration process, enabling the incineration of the cuttings within the chamber as the cuttings are moved through each chamber, yet preventing inadvertent ignition of any oil or gas fumes or the like which would normally ignite under the high temperature, but due to the presence of the inert gas in the chamber, ignition is prevented. Further, there in included introduction of nitrogen gas into the exhaust line to further insure that no ignition of gases being exhausted takes place in the system, so that ignition would not occur inadvertently following the flow of the fumes out of the chamber into the exhaust system.
  • an inert fluid such as nitrogen gas
  • FIGURE 1 illustrates the oil recovery system of the present invention which is illustrated by the numeral 10.
  • the oil recovery system of the present invention is directed to a first principal stage which is undertaken in the oil extraction process stage designated by the numeral 12, the oil recovery stage itself designated by the numeral 14.
  • a third stage as designated by numeral 16 relates to a means for preventing ignition of cuttings during the incineration process. So that a clear understanding can be had of the system, a discussion of the oil extraction stage 12 shall be initially described.
  • oil extraction unit 12 comprises a main hopper 17 for receiving a quantity of cuttings that have been received from downhole, the cuttings for the most part are ladened with hydrocarbons or the like. Hopper 17 would direct the cuttings through chute 18 into a plurality of upper most laterally disposed incineration chambers 20. As seen in FIGURE 2, in the preferred embodiment there would be included a pair of laterally disposed incineration chambers 20 at the upper most level for receiving the wet oil ladened cuttings from hopper 17.
  • each chamber 20 could be of the type as disclosed in U.S. Patent No. 4,606,283, incorporated herein by reference, including a laterally disposed auger 21 having an internal continuous auger blade 22 for moving the oil ladened cuttings from a first end 24 that has received the cuttings through the top portion 25 of chamber 20 to a second end 26 wherein the cuttings would be removed from the upper most chamber 20.
  • chamber 20 shall have the same type of heating elements that are disclosed in the aforesaid U.S. Patent, and will function to provide a continuous layer of heat directed inwardly towards the cuttings that are being moved through the internal incineration chambers 20.
  • Each of the auger blades 22 are driven by the separate motor 28, which provides selective, variable speed to the auger 22 depending on the speed at which one wishes the cuttings to travel throughout the length of incineration chamber 20.
  • chamber 20 has been heated up to a temperature at least 500 degrees F(260°C) as the cuttings are moving through the length of the chamber in the direction of Arrow 30.
  • any oil or gas or other hydrocarbons which may be ladened upon the oil cuttings would tend to vaporize, within chamber 20.
  • the vaporized hydrocarbons would be removed via outlet line 32 into the oil recover section 14, as will be discussed further.
  • the cuttings As the cuttings move to the end portion 26 of the upper most pair of incineration chambers 20, the cuttings would then be deposited into chute 34 which would deposit the cuttings into the second most section of chambers 36 which comprise preferably a pair of laterally disposed chambers, and housed therewithin is a continuous auger 22 (not illustrated) which is driven by a variable speed via motor 28 during use.
  • a continuous auger 22 (not illustrated) which is driven by a variable speed via motor 28 during use.
  • the cuttings in chamber 36 move in the opposite direction as indicated by Arrow 38, due to the fact that they have been deposited at the end 37 and must be carried throughout the chamber 36 to the second end 39 for further treatment.
  • chamber 36 is likewise heated with the type of heating element as disclosed in U.S. Patent No. 4,606,283, and defines substantially an incineration chamber therewithin as the cuttings move in the direction of Arrow 38 to the second end 39 of the chamber 36.
  • the cuttings are heated to a temperature of approximately 1000 to 1200°F.(537.8°C to 648.9°C) wherein the cuttings are substantially dried and crushed to an ashen state when they reached the second end 39 of chamber 36.
  • each pair of intermediate chambers 36 and lower chambers 44 are positioned in two columns, so that material falling from each chamber 20 to chamber 46 through chutes 34 and 41 respectively fall in a straight line and therefore there is no impedance in the movement of the cuttings from the upper to the intermediate to the lower chambers as the cuttings move from upper chambers 20 to the lower chambers 44. Therefore, the system may operate more efficiently and the presence of the two column chambers enabled quicker movement of the cuttings through the chambers and therefore quicker removal of the cuttings during the process.
  • chambers 44 has contained therewithin a continuous auger, similar to auger 22, operated by electric motor 28 so that the cuttings which fall into the end 44 of chambers 44 via chute 41 are moved in the direction of Arrow 53 to the furthest most end 51 of chambers 44. Since the cuttings have been dried and crushed to an ashen state, chambers 44, although equipped with the same type of heating elements as with chambers 20 and 36, would for the most part, in most cases, not be heated to any temperature but would be kept at substantially ambient temperature.
  • the cuttings are allowed to cool from their high temperature after being heated within chambers 36, and during the travel between end 49 to end 51 have cooled substantially to a point where they may be deposited out of chambers 44.
  • each chute 52 in this particular embodiment, would dump into a transport chamber 54 which would in effect be a laterally disposed chamber having a continuous auger 56 therethrough through which the dried cuttings could be moved from the first end 57 to the exit end 59.
  • a transport chamber 54 which would in effect be a laterally disposed chamber having a continuous auger 56 therethrough through which the dried cuttings could be moved from the first end 57 to the exit end 59.
  • FIGURE 2 for uses on land rigs, cuttings would fall in the direction of Arrow 61 onto a conveyor system 60, having a continuous conveyor belt 62 for conveying the dried cuttings into a storage bin or the like.
  • the cuttings would fall from end portion 59 directly into the surrounding waters.
  • auger units 20, 36 and 44 would be substantially supported by a vertically disposed support members 43 resting upon a skid unit 64.
  • the incineration chambers of the present invention would be supplied energy from an electrical control system of the type disclosed in U.S. Patent No. 4,606,283, in order to obtain the required temperature within the incineration chambers.
  • the movement of the gas and vapors from the chambers through principal exhaust line 62 would be as a result of fan 70 positioned within oil recovery zone 14 which would create a vacuum within line 62 to assure that any vapors formed within the incineration chambers are immediately pulled up from the chamber through the exhaust lines as discussed.
  • incineration chambers 20 and 36 would incinerate the oil ladened cuttings moving therethrough at a temperature range between 500°F and 1200°F(260°C to 648.9°C). At that temperature, there is a distinct possibility that the hydrocarbon vapors formed during the incineration would tend to ignite and result in explosions within the incineration chambers which at the least may affect the operation of the chambers, and at the worst, make a disruption of the system through the possible rupture of the incineration chamber as a result of the ignition.
  • the improved system has incorporated a means for preventing the inadvertent ignition of hydrocarbons within its incineration chambers 20, 36, or 44 through the introduction of an inert fluid or gas into each of the chambers during incineration.
  • this means would include an inert gas inlet line 100 which would introduce an inert fluid or gas, preferably nitrogen, through line 100 into the incineration chambers.
  • an inert gas inlet line 100 which would introduce an inert fluid or gas, preferably nitrogen, through line 100 into the incineration chambers.
  • a nitrogen producing system adjacent the present invention which, as known in the art, would extract nitrogen from the ambient atmosphere, pressurize it, and feed it into the system through line 100.
  • second gas introduction line 106 which would introduce gas into the first end 37 of intermediate incineration chamber 36 and line 108 which would introduce gas into the second end 39 of incineration chamber 36, again the nitrogen gas flowing in the direction of Arrow 37 from end 39, and in the direction of Arrow of Arrow 38 from first end 37.
  • the nitrogen gas in incineration 36 would fill chamber 36 and likewise prevent ignition of the hydrocarbon vapors. The vapors would be sucked into exhaust system 60, together with the hydrocarbons vapors.
  • lower incineration units 44 would have the introduction of nitrogen gas via first line 110 at first end 51 and line 112 at second end 49, again the gas moving in the direction of Arrows 50 and 53 respectively and up into the exhaust system 60, again preventing any inadvertent ignition of the vapors therewithin.
  • a gas introduction line 114 which feeds directly into the principal exhaust line 62 so that in the event any vapors which may ignite within exhaust line 62 due to the possibility of intense heat therewithin, would likewise be saturated with sufficient nitrogen gas to prevent any inadvertent ignition prior to the introduction of the vapors into the oil recovery zone 14. Therefore, in the improvement of the system, it is assured that any possible ignitions which may have occured in the past in less sophisticated systems would be prevented from occurring and would assure proper incineration without the possibility of ignition within the system.
  • any of the vapors which are emitted from the upper most chamber units 20, 36 and 44, are collected via exhaust collection pipe 62, and travel to the oil recovery zone 14.
  • fan or the like 70 would draw the vapors from the chambers as the vapors are collected during the heating process.
  • condenser 70 could be of the type manufactured by Xchanger Corporation.
  • Collection means 88 would comprise a closed tank portion 90 comprising four walls 92, a bottom portion 94 and a top portion 96 to define an oil condensation collection zone therewithin.
  • Tank portion 90 is divided into a first collection tank 98 and a second collection tank 200 collection tanks 90 and 200 separated by vertically disposed baffle 202 vertically disposed between the front and rear wall of tank 90 and to a height substantially 3/4 of the height of tank 90 whereby there is provided a fluid flow space 204 between the top 96 and the top end of baffle plate 202.
  • a monitor means 212 which has a probe 214 directed into the interior of tank portion 98 so that when probe 214 is made to contact water 206 to that level as seen by interface 216, the probe will automatically open spigot 218 and the water 206 will be drained therefrom to be deposited as waste or for other uses.
  • the vaporized hydrocarbons in water are siphoned off into the oil collection or recovery zone 14 to be collected in the manner that was described, and the cuttings which are then routed through augers 36 and 44 for further burning, breaking, drying and cooling so that they may be deposited into the surrounding waters.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing Of Solid Wastes (AREA)
EP88311053A 1988-03-07 1988-11-23 Verfahren und Einrichtung zum Rückgewinnen von Öl Withdrawn EP0331842A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16517988A 1988-03-07 1988-03-07
US165179 1988-03-07

Publications (1)

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EP0331842A1 true EP0331842A1 (de) 1989-09-13

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020938A1 (en) * 1997-10-20 1999-04-29 Its Drilling Services Limited Incinerator apparatus
GB2338733A (en) * 1998-06-25 1999-12-29 Tuboscope Vetco Int Transportable drilling mud recycling system
GB2349656A (en) * 1998-06-25 2000-11-08 Tuboscope Vetco Int Transportable drilling mud recycling system
FR2804205A1 (fr) * 2000-01-21 2001-07-27 Thide Environnement Four de thermolyse, notamment de dechets et/ou de biomasse, a chauffage spatialement inhomogene
WO2002070151A1 (en) * 2001-03-07 2002-09-12 Earl Gingras Auger cleaning of solids
WO2002088506A3 (en) * 2001-05-02 2003-01-16 Total Waste Man Alliance Plc Apparatus and method for treatment of waste products
WO2004011767A1 (en) * 2002-07-25 2004-02-05 Martin Mckenzie Apparatus and method for transporting of drill cuttings
US8850715B2 (en) * 2006-09-07 2014-10-07 Eisenmann Ag Process and installation for drying articles
CN110805912A (zh) * 2019-11-10 2020-02-18 桐乡市常新农机专业合作社 一种纺织废料有机废气燃烧余热回收设备
CN113007713A (zh) * 2020-11-19 2021-06-22 安徽省蓝天能源环保科技有限公司 一种垃圾与餐厨废弃油脂混合焚烧炉

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139462A (en) * 1976-07-12 1979-02-13 Dresser Industries, Inc. Method for thermally treating oil well drill cuttings
EP0184411A2 (de) * 1984-12-03 1986-06-11 Atlantic Richfield Company Verfahren und Vorrichtung zur Behandlung der Bohrabfälle
US4606283A (en) * 1985-03-13 1986-08-19 Desormeaux Farrell P System for extracting contaminants and hydrocarbons from cuttings waste in oil well drilling
EP0200418A2 (de) * 1985-04-19 1986-11-05 Atlantic Richfield Company Behandlung des Bohrkleins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139462A (en) * 1976-07-12 1979-02-13 Dresser Industries, Inc. Method for thermally treating oil well drill cuttings
US4208285A (en) * 1976-07-12 1980-06-17 Dresser Industries, Inc. Drill cuttings disposal system with good environmental and ecological properties
EP0184411A2 (de) * 1984-12-03 1986-06-11 Atlantic Richfield Company Verfahren und Vorrichtung zur Behandlung der Bohrabfälle
US4606283A (en) * 1985-03-13 1986-08-19 Desormeaux Farrell P System for extracting contaminants and hydrocarbons from cuttings waste in oil well drilling
EP0200418A2 (de) * 1985-04-19 1986-11-05 Atlantic Richfield Company Behandlung des Bohrkleins

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020938A1 (en) * 1997-10-20 1999-04-29 Its Drilling Services Limited Incinerator apparatus
GB2338733A (en) * 1998-06-25 1999-12-29 Tuboscope Vetco Int Transportable drilling mud recycling system
GB2338733B (en) * 1998-06-25 2000-06-28 Tuboscope Vetco Int Wellbore cuttings re-cycling system
GB2349656A (en) * 1998-06-25 2000-11-08 Tuboscope Vetco Int Transportable drilling mud recycling system
GB2349656B (en) * 1998-06-25 2000-12-27 Tuboscope Vetco Int Wellbore cuttings re-cycling system
FR2804205A1 (fr) * 2000-01-21 2001-07-27 Thide Environnement Four de thermolyse, notamment de dechets et/ou de biomasse, a chauffage spatialement inhomogene
WO2002070151A1 (en) * 2001-03-07 2002-09-12 Earl Gingras Auger cleaning of solids
WO2002088506A3 (en) * 2001-05-02 2003-01-16 Total Waste Man Alliance Plc Apparatus and method for treatment of waste products
GB2392393A (en) * 2001-05-02 2004-03-03 Total Waste Man Alliance Plc Apparatus and method for treatment of waste products
GB2392393B (en) * 2001-05-02 2005-03-16 Total Waste Man Alliance Plc Apparatus and method
WO2004011767A1 (en) * 2002-07-25 2004-02-05 Martin Mckenzie Apparatus and method for transporting of drill cuttings
US8850715B2 (en) * 2006-09-07 2014-10-07 Eisenmann Ag Process and installation for drying articles
CN110805912A (zh) * 2019-11-10 2020-02-18 桐乡市常新农机专业合作社 一种纺织废料有机废气燃烧余热回收设备
CN113007713A (zh) * 2020-11-19 2021-06-22 安徽省蓝天能源环保科技有限公司 一种垃圾与餐厨废弃油脂混合焚烧炉

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